Project: LML Duramax

  • ATP Project: LML Duramax - Factory Emissions Equipped

     

    ATP Project LML Factory Emissions Equipped Part 1

    UPDATE:
    A year ago, we started this LML Project on my 2013 in hopes of dispelling myths and discovering limitations and opportunities for a full factory emissions "intact" daily driver.

    Our LML Project Series has been one of our most read, and most shared write-ups we've produced to date.

    I just made a new entry to the forum thread a few days ago with some crazy regen data and observations that were surprising. You can get the link at the end of this post where I've included the entire summary to date.

    I also plan to be installing an emission compliant twin turbo kit from ATS this month so be on the lookout.

    Project: LML Duramax Part 2: MBRP Downpipe Install
    Project: LML Duramax Part 3: AirDog II 4G Install Results

    Carry on...

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  • ATP Project: LML Duramax - AirDog II 4G Install Results

     

    ATP Project LML AirDog II 4G Install Results Part 3

    Duramax LML AirDog II 4G Lift Pump Review

    (You will want to check out the AirDog demo at the bottom of this post)

    Test vehicle: 2013 GMC LML with all factory emissions in place.

    To recap our previous testing please check out our full Project LML blog:
    Project LML Duramax: Factory Emissions Equipped

    Up to this point the truck is fun to drive and responsive but was lacking the needed fuel for more than dyno numbers.  I tested at the track before the lift pump install.

    The same tune that made 500HP on the dyno without a lift pump didn't perform on the 1/4 mile. The truck dropped rail pressure badly about 3rd gear and didn't recover for most of the run resulting in 14.2's with 2.0 second, 60' times.

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  • ATP Project: LML Duramax - MBRP Downpipe Install Results

     

    ATP Project LML MBRP Downpipe Install Results Part 2

    Test vehicle: 2013 GMC LML with all factory emissions in place.

    To recap our previous testing please check out our first Project LML Duramax blog post:  http://atptrucks.com/blog/project-lml-duramax/

    The horsepower claim for the MBRP downpipe is 21hp and 24ft lbs. We will see how this piggy backs on the current mods with HP tune and the S&B intake.

    MBRGM8427 Duramax LML Downpipe - Stock vs Aftermarket

    I can tell you the downpipe install on this Duramax is not for the faint of heart. The install is much easier if done in conjunction with a transmission/converter install. Having the transmission out of the way really speeds things up and is much easier on the knuckles and the frustration level.

    Even with the transmission out of the way, the install still took about 3 hours.  This wasn’t straight time as I dealt with a few interruptions along the way, but a good baseline none-the-less.

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